/* 
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */


function showElement(layer){
    var myLayer = document.getElementById(layer);
    if(myLayer.style.display=="none"){
        myLayer.style.display="block";
        myLayer.backgroundPosition="top";
    } else { 
        myLayer.style.display="none";
    }
}